disk_total_space

Beware of empty files!<?php    // Wrong    $exp = floor(log($bytes) / log(1024));    //Correct    $exp = $bytes ? floor(log($bytes) / log(1024)) : 0;?>

For a non-looping way to add symbols to a number of bytes:<?phpfunction getSymbolByQuantity($bytes) {    $symbols = array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB');    $exp = floor(log($bytes)/log(1024));    return sprintf('%.2f '.$symbol[$exp], ($bytes/pow(1024, floor($exp))));}

To find the total size of a file/directory you have to differ two situations:(on Linux/Unix based systems only!?)you are interested:1) in the total size of the files in the dir/subdirs2) what place on the disk your dir/subdirs/files uses- 1) and 2) normaly differs, depending on the size of the inodes- mostly 2) is greater than 1) (in the order of any kB)- filesize($file) gives 1)- "du -ab $file" gives 2)so you have to choose your situation!on my server I have no rights to use "exec du" in the case of 2), so I use:  $s = stat($file);  $size = $s[11]*$s[12]/8);whitch is counting the inodes [12] times the size of them in Bits [11]hopes this helps to count the used disk place in a right way... :-)                     Andreas Dick

"filesystem or disk partition" does not equal "directory" for Windows.  Thanks.

function roundsize($size){    $i=0;    $iec = array("B", "Kb", "Mb", "Gb", "Tb");    while (($size/1024)>1) {        $size=$size/1024;        $i++;}    return(round($size,1)." ".$iec[$i]);}